ASTROSAT CZTI

Data Quality Report

Orbit 27550

Creation date: 2024-06-27T19:41:25.680329
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C05_019T04_9000003956_27550cztM0_level2.evt modeM0/AS1C05_019T04_9000003956_27550cztM0_level2_quad_clean.evt
Size (bytes)566,856,000116,084,160
Size540.6 MB 110.7 MB
Events in quadrant A3,340,951778,234
Events in quadrant B3,988,286786,498
Events in quadrant C4,606,384733,919
Events in quadrant D4,750,499722,736

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146720
B0164190
C0183630
D0188570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70921301.833051%
B70932343.299027%
C70925257.402707%
D70924115.795262%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7092 7092 0 0 0.00% 0.00%
B 7093 7093 59 59 0.83% 0.83%
C 7092 7092 153 153 2.16% 2.16%
D 7092 7092 287 287 4.05% 4.05%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 11567 61.41 866 846 174.6
A 3 137 8336 42.9 866 846 174.6
A 0 226 7588 38.62 866 846 174.6
B 10 245 527012 3238.08 853 830 162.5
B 15 32 40021 241.18 853 830 162.5
B 12 111 20293 119.77 853 830 162.5
C 7 221 956816 5056.09 809 813 189.1
C 2 16 322931 1703.61 809 813 189.1
C 14 238 131373 690.5 809 813 189.1
D 1 52 1386737 7103.45 825 799 195.1
D 6 112 90368 459.07 825 799 195.1
D 2 250 77877 395.05 825 799 195.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter